FUNDRAISER: You can always count on a good time with the Sisters of Perpetual Indulgence, whose latest event is Supreme Bingo: Celebrating the Girl Groups of the '50s and '60s, benefiting the Metropolitan Community Church and Foundation. There will be show-stopping performances between games, so get ready to "Du Wop while you Dob!"

4 to 7 p.m. // War Memorial Veterans Building (401 Van Ness Ave) // $20-40

LITERARY: Some of the biggest "heartthrobs" of the San Francisco literary scene will read some of the hottest, most radical poetry and prose at the launch party of Aorta Magazine's latest issue, Cardiac Unrest.

7 p.m. // Million Fishes Arts Collective (2501 Bryant St) // $5-10, sliding scale

MUSIC: The SF Folk Music Club presents the monthly second Saturday SF Hootenanny Night, which was inspired by the hootenannies that Woody Guthrie and Pete Seeger hosted in NYC in the 1940s. Head over and stomp your feet, cry in your beer, or both.

7 to 10:30 p.m. // Cafe International (508 Haight St) // free